Union has signed on to star as Rock's fiancée in his upcoming film, Finally Famous, confirms TheWrap.com. The actress will play a reality star trying to convince Rock, a comedian trying to reinvent himself as a serious actor, to marry her on TV.

Rosario Dawsonalso stars in the comedy as a journalist working on a profile piece of Rock but winds up falling for him. Rock will direct the film from his own script, as well as star.

Besides working on her new BET show, Being Mary Jane, Union is reportedly reprising her role from Think Like a Man for that film's sequel, which is currently shooting in Los Angeles.